© Siemens AG
SIMATIC S7-400
Powerful modular Siemens controller for plant and process automation with standard, fail-safe (F) and fault-tolerant (H) CPUs; Siemens announced the phase-out of the standard, F and H CPUs on 1 October 2026 (type cancellation planned for 1 January 2027 for F and 1 October 2027 for standard and H), while the CPU 410-5H for PCS 7 stays active and the recommended replacements are the CPU 410 and S7-1500
Price and delivery time are given after a technical review.
Production status: Phase-out
Recorded as phase-out. Siemens' product note 110005434 (entry date 1 October 2026, read on 2 November 2026) sets the phase-out announcement (P.M400) for selected S7-400 components on 1 October 2026 and plans type cancellation (P.M410) for the F CPUs on 1 January 2027 and for the standard and H CPUs on 1 October 2027; after that they are supplied only as spare parts and for repair, not for new systems or major expansions. Under its standard policy Siemens keeps spare parts available for 10 years after the announcement, without guaranteeing it for every component; its S7-400 page speaks of availability beyond 2035. On SiePortal (2 November 2026) these codes show "Phase Out Announce": 6ES7412-2EK07-0AB0, 6ES7414-3EM07-0AB0, 6ES7416-3ES07-0AB0 and 6ES7417-4XT07-0AB0 (standard, 1 October 2027), 6ES7414-3FM07-0AB0 and 6ES7416-3FS07-0AB0 (F, 1 January 2027), and 6ES7412-5HK06-0AB0, 6ES7414-5HM06-0AB0, 6ES7416-5HS06-0AB0 and 6ES7417-5HT06-0AB0 (H, 1 October 2027). Not affected: the CPU 410-5H code 6ES7410-5HX08-0AB0 ("Active Product", not on the list) and, among modules, 6ES7407-0KA02-0AA0 (PS 407, 10 A) and 6ES7400-1JA11-0AA0 (UR2 rack), both "Active Product"; 6ES7421-1BL01-0AA0 (SM 421, 32 DI) shows "Prod. Cancellation". Siemens names the CPU 410 (for PCS 7 and process automation) and S7-1500 as functional replacements. Ask for the status of each code before buying.
Checked on Nov 2, 2026
A suggested successor is not an exact equivalent; the right model depends on your application.
SIMATIC S7-400 is Siemens' modular controller for standard and fail-safe automation in the manufacturing and process industries. Siemens' page presents it as a long-term investment with a consistent supply of spare parts and availability beyond 2035, and says the S7-400 and the innovated S7-410 product line will stay the hardware backbone of the PCS 7 control system. The S7-400H and FH systems are used where high security and availability and data-intensive tasks are needed.
Work memory ranges from 1 MB (CPU 412-2 PN) to 32 MB (CPU 417-4 and 417-5H), and the bit instruction time from 31.25 ns to 7.5 ns. The CPU 416-3 PN/DP, for example, has 16 MB (8 MB code and 8 MB data), an MPI/PROFIBUS DP interface, a two-port PROFINET interface and a PROFIBUS DP interface on an IF 964-DP module.
Siemens' product note 110005434 (entry date 1 October 2026) sets the P.M400 milestone, the announcement of phase-out, for selected S7-400 components on 1 October 2026. Type cancellation (P.M410) is staggered: 1 January 2027 for the fail-safe (F) CPUs and 1 October 2027 for the standard and H CPUs; the CP 443-1 communication processors and the S7 memory cards are on the same list. Until P.M410 the components are still supplied as new parts; after it only as spare parts or for repair, in quantities customary for spare parts and not for new plants or major expansions. Siemens says that under its standard policy spare parts stay available for 10 years after the phase-out announcement and that final discontinuation (P.M490) is not planned before that, although because of the component market it cannot guarantee this for every assembly; its S7-400 page speaks of availability beyond 2035.
Siemens names the CPU 410 (especially for process automation and PCS 7) and the S7-1500 as functional replacements and prefers the S7-1500 with TIA Portal for new and migration projects. The CPU 410-5H is not on the phase-out list and shows "Active Product" on SiePortal. Among the system modules, a PS 407 power supply (10 A) and a UR2 rack showed "Active Product", while an SM 421 module with 32 digital inputs shows "Prod. Cancellation", so the status of each code has to be checked separately.
Security advisory SSA-892915 (December 2023) says that for the V7 PN/DP CPUs (412-2 PN, 414-3 PN/DP, 414F-3 PN/DP, 416-3 PN/DP and 416F-3 PN/DP) currently no fix is planned, and recommends disabling the web server or restricting it to trusted users.
According to the data sheets the V7 PN/DP CPUs are configured with STEP 7 V5.5 or higher with HSP 262, the CPU 417-4 with STEP 7 V5.4 or higher with HSP 261, the 41x-5H CPUs with STEP 7 V5.5 SP2 with HF1, and the CPU 410-5H with SIMATIC PCS 7 V10.0.1 or higher.
| Model | Order code | Code type | Attributes | Request |
|---|---|---|---|---|
| CPU 412-2 PNCPU ردهٔ ورودی نسخهٔ V7 با ۱ مگابایت حافظه (۰٫۵ مگابایت کد و ۰٫۵ مگابایت داده)، MPI/DP و PROFINET دوپورتی؛ عرض ۲۵ میلیمتر | 6ES7412-2EK07-0AB0 | Exact code |
| Request CPU 412-2 PN |
| CPU 414-3 PN/DPCPU نسخهٔ V7 با ۴ مگابایت حافظه (۲ مگابایت کد و ۲ مگابایت داده)، MPI/DP، PROFINET دوپورتی و DP روی IF 964-DP | 6ES7414-3EM07-0AB0 | Exact code |
| Request CPU 414-3 PN/DP |
| CPU 414F-3 PN/DPنسخهٔ ایمنی (F) CPU 414-3 PN/DP با همان ۴ مگابایت حافظه | 6ES7414-3FM07-0AB0 | Exact code |
| Request CPU 414F-3 PN/DP |
| CPU 416-3 PN/DPCPU نسخهٔ V7 با ۱۶ مگابایت حافظه (۸ مگابایت کد و ۸ مگابایت داده)، MPI/DP، PROFINET دوپورتی و DP روی IF 964-DP | 6ES7416-3ES07-0AB0 | Exact code |
| Request CPU 416-3 PN/DP |
| CPU 416F-3 PN/DPنسخهٔ ایمنی (F) CPU 416-3 PN/DP با همان ۱۶ مگابایت حافظه | 6ES7416-3FS07-0AB0 | Exact code |
| Request CPU 416F-3 PN/DP |
| CPU 417-4بزرگترین CPU استاندارد با ۳۲ مگابایت حافظه (۱۶ مگابایت کد و ۱۶ مگابایت داده)، MPI و PROFIBUS DP و ماژولهای IFM؛ بدون رابط PROFINET یکپارچه | 6ES7417-4XT07-0AB0 | Exact code |
| Request CPU 417-4 |
| CPU 412-5H PN/DPCPU افزونهخطاپذیر H با ۱ مگابایت حافظه و رابطهای MPI/DP، DP، PN و دو رابط همگامسازی | 6ES7412-5HK06-0AB0 | Exact code |
| Request CPU 412-5H PN/DP |
| CPU 414-5H PN/DPCPU H با ۴ مگابایت حافظه (۲ مگابایت داده و ۲ مگابایت برنامه) و دو رابط همگامسازی | 6ES7414-5HM06-0AB0 | Exact code |
| Request CPU 414-5H PN/DP |
| CPU 416-5H PN/DPCPU H با ۱۶ مگابایت حافظه (۱۰ مگابایت داده و ۶ مگابایت برنامه) و دو رابط همگامسازی | 6ES7416-5HS06-0AB0 | Exact code |
| Request CPU 416-5H PN/DP |
| CPU 417-5H PN/DPCPU H با ۳۲ مگابایت حافظه (۱۶ مگابایت داده و ۱۶ مگابایت برنامه) و دو رابط همگامسازی | 6ES7417-5HT06-0AB0 | Exact code |
| Request CPU 417-5H PN/DP |
| CPU 410-5H (spare part version, without SEC)CPU 410-5H برای اتوماسیون فرایند و PCS 7 با دو رابط PN، یک DP و دو رابط همگامسازی؛ این کد «برای استفاده بهعنوان قطعهٔ یدکی و بدون System Expansion Card» است | 6ES7410-5HX08-0AB0 | Exact code |
| Request CPU 410-5H (spare part version, without SEC) |
| CPU classesCPU classes | Standard V7 (412 … 417), F (414F-3, 416F-2, 416F-3), H (412-5H … 417-5H), 410-5H |
|---|---|
| CPU 416-3 PN/DP dimensionsCPU 416-3 PN/DP dimensions | 50 x 290 x 219 (W x H x D) mm |
| CPU 416-3 PN/DP operating temperatureCPU 416-3 PN/DP operating temperature | 0 … 60 °C |
| Expansion capacity (CPU 416-3 PN/DP)Expansion capacity (CPU 416-3 PN/DP) | up to 21 expansion units, up to 6 IM 460 |
| MulticomputingMulticomputing | up to 4 CPUs with UR1 or UR2 |
| CPU work memoryCPU work memory | 1 (CPU 412-2 PN) … 32 (CPU 417-4, 417-5H) MB |
|---|---|
| Bit instruction timeBit instruction time | 31.25 (CPU 412) … 7.5 (CPU 417, 410-5H) ns |
| Load memory (memory card, CPU 416-3 PN/DP)Load memory (memory card, CPU 416-3 PN/DP) | FLASH and RAM memory cards up to 64 MB |
| CPU 416-3 PN/DP interfacesCPU 416-3 PN/DP interfaces | MPI/PROFIBUS DP + PROFINET (2 ports) + PROFIBUS DP (IF 964-DP) |
|---|---|
| H CPU interfacesH CPU interfaces | MPI/DP, DP, PN and 2 synchronization interfaces (CPU 412-5H … 417-5H) |
| IO devices in redundant mode (CPU 414-5H)IO devices in redundant mode (CPU 414-5H) | up to 256 (via both interfaces) |
| CPU firmwareCPU firmware | V7.0 (V7 CPUs); V6.0 (412-5H … 417-5H); V8.3 (410-5H) |
|---|---|
| Configuration softwareConfiguration software | STEP 7 V5.5 + HSP 262 (V7 PN/DP); STEP 7 V5.4 + HSP 261 (417-4); STEP 7 V5.5 SP2 + HF1 (41x-5H); PCS 7 V10.0.1 (410-5H) |
| Fix for V7 PN/DP CPUsFix for V7 PN/DP CPUs | No fix planned (SSA-892915, 12/2023); disable web server |
|---|
| Phase-out announcement (P.M400)Phase-out announcement (P.M400) | 1 Oct 2026, for selected components: standard, F and H CPUs, CP 443-1 and S7 memory cards |
|---|---|
| Siemens statement on the familySiemens statement on the family | No end date given; presented as long-term investment and PCS 7 hardware backbone |
| Planned type cancellation (P.M410)Planned type cancellation (P.M410) | 1 Jan 2027 (F CPUs); 1 Oct 2027 (standard and H CPUs, CP 443-1, memory cards) |
| Spare partsSpare parts | 10 years after the phase-out announcement (standard policy, not guaranteed for every component); final discontinuation (P.M490) not planned before that |
| Statement on Siemens' S7-400 pageStatement on Siemens' S7-400 page | Availability beyond 2035; S7-400 and the S7-410 line stay the PCS 7 hardware backbone |
Power modules PS 407 (4 A, 10 A, 10 A R, 20 A)
S7-400 power modules in the 2024 power modules manual; the codes checked with the suffix 4CA0 are headed 'only for China customers' in their data sheets
Racks UR1 and UR2
Central and expansion racks with which the CPU 416-3 PN/DP supports up to 4 CPUs in multicomputing
Interface modules IM 460 and IM 463
Interface modules for connecting expansion racks; the CPU 416-3 PN/DP accepts up to 6 IM 460 and up to 4 IM 463
Memory Cards (FLASH and RAM)
FLASH and RAM memory cards for load memory; the CPU 416-3 PN/DP accepts up to 64 MB Siemens lists the S7 memory cards in its 2026 phase-out note too (announcement 1 October 2026, type cancellation 1 October 2027).
IF 964-DP interface module
PROFIBUS DP interface module plugged into the 414-3 and 416-3 CPUs
Synchronization modules (for S7-400H)
Synchronization modules that connect the two CPUs of an H system
Manual
S7-400 Automation System, CPU Specifications
S7-400 Automation System, CPU Specifications
Language: English · Version 03/2023
Manual
Fault-tolerant systems CPU S7-400H (V6.0) System Manual
Fault-tolerant systems CPU S7-400H (V6.0) System Manual
Language: English · Version 11/2025
Manual
S7-400 Power modules Operating Instructions
S7-400 Power modules Operating Instructions
Language: English · Version 06/2024
Manual
S7-400 Automation System Module Data Reference Manual
S7-400 Automation System Module Data Reference Manual
Language: English
Manual
Guide for Migrating SIMATIC S7-300/S7-400 to S7-1500 and TIA Portal
Guide for Migrating SIMATIC S7-300/S7-400 to S7-1500 and TIA Portal
Language: English · Version 09/2015
Other
Siemens Security Advisory SSA-892915 (S7-400 V7 PN/DP CPUs)
Siemens Security Advisory SSA-892915 (S7-400 V7 PN/DP CPUs)
Language: English · Version 2023-12-12
Data sheet
Data sheet 6ES7416-3ES07-0AB0 (CPU 416-3 PN/DP)
Data sheet 6ES7416-3ES07-0AB0 (CPU 416-3 PN/DP)
Language: English
Data sheet
Data sheet 6ES7414-5HM06-0AB0 (CPU 414-5H PN/DP)
Data sheet 6ES7414-5HM06-0AB0 (CPU 414-5H PN/DP)
Language: English
Other
Product note: Announcement of product phase-out of selected components of the SIMATIC S7-400 family
Product note: Announcement of product phase-out of selected components of the SIMATIC S7-400 family
Language: English · Version 2026-10-01
Partly. On 1 October 2026 Siemens set the phase-out announcement (P.M400) for the standard, F and H CPUs, the CP 443-1 communication processors and the memory cards. Type cancellation (P.M410) is planned for 1 January 2027 for the F CPUs and for 1 October 2027 for the standard and H CPUs; until then they are still supplied as new parts, and afterwards only as spare parts and for repair. The CPU 410-5H is not on this list, and system modules have their own statuses. Before buying, check the exact status of the code on SiePortal or with a Siemens representative.
Siemens names the CPU 410 (especially for process automation) and the S7-1500 as functional replacements and prefers the S7-1500 with TIA Portal for new and migration projects. According to its table, S7-400 in STEP 7 V5.x goes to a 15xx CPU in TIA Portal (preferred), a CPU 410 in PCS 7/PCS neo or a CPU 410 in STEP 7 (special sales release required); S7-400 in PCS 7/PCS neo goes to the CPU 410 and S7-400 in TIA Portal to S7-15xx. An older Siemens migration guide (09/2015) also mapped the standard and F CPUs to S7-1500 CPUs, for example the CPU 414-3 PN/DP to the CPU 1518-4 PN/DP (the code of that time); that guide was not valid for S7-400 with PCS 7 and did not cover H systems.
Standard CPUs (such as the 414-3 PN/DP) are for ordinary control. F CPUs (such as the 416F-3 PN/DP) are for safety applications. H CPUs (412-5H to 417-5H and 410-5H) have two synchronization interfaces and work as a redundant pair in S7-400H systems for high availability; FH systems combine both features.
According to the data sheet: one MPI/PROFIBUS DP interface at 12 Mbit/s, one PROFINET interface with two ports, and one PROFIBUS DP interface on an IF 964-DP module. Work memory is 16 MB and the memory card takes up to 64 MB.
STEP 7 V5.5 or higher (V7 PN/DP CPUs with HSP 262), or SIMATIC PCS 7 for the CPU 410-5H. TIA Portal support is not mentioned in the data sheets that were reviewed; if needed, check the release notes of TIA Portal.
SIMATIC S7-1500
Modular Siemens advanced controller with standard, compact, fail-safe, technology and redundant CPUs, up to 162 MB of work memory and bit instruction times down to 0.3 ns
پیالسی (PLC)
SIMATIC S7-300
Modular Siemens controller removed from the portfolio on 1 October 2025 and supplied only as spare parts and repair; the recommended successor is S7-1500
پیالسی (PLC)
Has a successor
SIMATIC STEP 7
Software for configuring, programming, testing and diagnosing SIMATIC controllers: STEP 7 in TIA Portal in Basic and Professional editions, and classic STEP 7 V5.7 SP4
نرمافزار اتوماسیون
SIMATIC WinCC
Siemens HMI and SCADA engineering software in TIA Portal: the Basic, Comfort, Advanced and Professional editions and the newer WinCC Unified line (version V21)
نرمافزار اتوماسیون
Send your order code or requirement; after a technical review we give you the price and delivery time.